Standard value of ultrasound elastography using acoustic radiation force impulse imaging (ARFI) in healthy liver tissue of children and adolescents.

Purpose: Ultrasound elastography by acoustic radiation force impulse imaging (ARFI) is used in adults for non invasive measurement of liver stiffness, indicating liver diseases like fibrosis. To establish ARFI in children and adolescents we determined standard values of healthy liver tissue and analysed potentially influencing factors.

Materials And Methods: 132 patients between 0 and 17 years old were measured using ARFI.

Application of ultrasound in callus distraction of the hypoplastic mandible: an additional method for the follow-up.

Mandibular callus distraction was performed on 14 patients. In addition to established radiological methods, sonography was performed to monitor the clinical progress. Ultrasound shows a precise picture of all interesting items in distraction treatment.